Question

Take a piece of fabric. With the help of a magnifying lens, observe how the fabric is. Pull out threads one by one from the fabric. Observe these threads.

i) What did you observe?

ii) Are you able to see the fine structure of the thread?

iii) Have you ever seen what people do to overcome this problem?

Answer 1

i) The thread has small fine like structures. Take one thread. Scratch its end. Observe it through a magnifying lens.

ii) Yes, it has fine structures. Take a needle and try to insert this thread into the eye of the needle. Can you? Isn’t it difficult?

iii) Generally when we are not able to put a thread into the eye of the needle, either we twist the end of the thread or we wet the end using saliva.